basic static sample server

package.json

@@ -10,6 +10,7 @@
     "snapshot": "cd repl && npm run snapshot",
     "repl": "cd repl && npm run dev",
     "osc": "cd packages/osc && npm run server",
+    "sampler": "cd ./repl/public/samples && node ../../packages/webaudio/sample-server.js",
     "build": "rm -rf out && cd repl && npm run build && cd ../tutorial && npm run build",
     "preview": "npx serve ./out",
     "deploy": "gh-pages -d out",

packages/webaudio/package.json

@@ -29,5 +29,10 @@
   "homepage": "https://github.com/tidalcycles/strudel#readme",
   "dependencies": {
     "@strudel.cycles/core": "^0.1.2"
+  },
+  "devDependencies": {
+    "koa": "^2.13.4",
+    "koa-static": "^5.0.0",
+    "@koa/cors": "^3.3.0"
   }
 }

packages/webaudio/sample-server.js

@@ -0,0 +1,34 @@
+// "sampler": "cd ./repl/public/samples && node ../../../packages/webaudio/sample-server.js",
+// "sampler": "http-server ./repl/public",
+
+import fs from 'fs';
+import path from 'path';
+import Koa from 'koa'; // CJS: require('koa');
+import cors from '@koa/cors';
+import serve from 'koa-static'; // CJS: require('koa-static')
+const cwd = process.cwd();
+const yellow = '\x1b[33m%s\x1b[0m';
+
+// get array of all folders in cwd:
+const banks = fs.readdirSync(cwd).filter((f) => fs.statSync(path.join(cwd, f)).isDirectory());
+const app = new Koa();
+
+app.use(cors());
+app.use(serve(cwd));
+app.use((ctx, next) => {
+  return next().then(() => {
+    if (ctx.path === '/') {
+      ctx.body = 'banks: ' + banks.join(', ');
+    }
+  });
+});
+const port = 1234;
+app.listen(port);
+
+console.log(yellow, `strudel sampler running at http://localhost:${port}`);
+
+// node: get current working directory
+console.log(yellow, 'cwd: ' + cwd);
+
+console.log('found banks:');
+banks.map((c) => console.log(yellow, c));